High-safety oil-immersed type transformer

Abstract

The invention relates to a high-safety oil-immersed type transformer. The high-safety oil-immersed type transformer comprises a transformer main body and an explosion-proof tube, wherein one end of the explosion-proof tube is communicated with the transformer main body, and the other end of the explosion-proof tube is communicated with atmosphere; the explosion-proof tube is internally provided with a first thin film, a second thin film, a first cavity, a second cavity, a third cavity and a fourth cavity; the first thin film and the second thin film are different in compressive strength; aluminum sulfate solution is contained in the first cavity and the third cavity, and sodium bicarbonate solution is contained in the second cavity and the fourth cavity; when an oil tank in the transformer main body is broken down, oil is cracked in high temperature to generate a large amount of gas, firstly the first thin film can be broken to reduce the pressure of the oil tank, the second thin film also can be broken if the fault is severe, the aluminum sulfate solution in the first cavity and the third cavity can flow out of gaps and flows into the second cavity or the fourth cavity along pipelines, the sodium bicarbonate solution in the second cavity or the fourth cavity reacts with the aluminium sulfate solution so as to play a role in fast cooling, and if a fire is generated, the effect of extinguishing the fire can be achieved.

Description

Technical field [0001] The invention relates to the technical field of power distribution equipment, in particular to a high-safety oil-immersed transformer. Background technique [0002] Oil-immersed transformers are a structural form of transformers. The coils are immersed in oil under working conditions. They have the characteristics of large volume, low cost, simple maintenance, good heat dissipation, strong overload capacity, and good environmental adaptability. It is suitable for power systems, industrial and mining enterprises, transportation, post and telecommunications departments, scientific research institutions, etc., to conduct insulation strength tests under power frequency or DC high voltage on various high-voltage electrical equipment, electrical components, and insulating materials. At present, most of the power transformers operating on the power grid are still oil-immersed transformers. [0003] The advantage of oil-immersed transformer is that the voltage level...

AI Technical Summary

Problems solved by technology

When there is a fault inside the transformer, a large amount of transformer oil is cracked by high temperature, and a large amount of gas is generated by violent decomposition, which increases the pressure in the oil pipe sharply. Excessive pressure will cause the fuel tank to explode or deform, but the traditional explosion-proof pipe has a simple structure and a single function

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